Get SNMP in Frame-relay link

[Natha340Mai340]

Hello everyone,

I'm trying monitor some virtual interfaces frame-relay but my snmp application ( PRTG ) shows a error: no response SNMP. this error occur for any virtual interface frame-relay. the physics interface frame-relay it's working for get snmp.

what can is happening ? maybe I have do some configuration inside the interface virtual frame-relay to get snmp? follow a configuration exemplo from a virtual interface

interface Serial0/2/0.100 point-to-point

ip address 172.30.1.2 255.255.255.252

frame-relay interface-dlci 100  

or get snmp it's work only for physics interface ?

any tip is welcome.

thanks

[Peter Paluch]

Hello Maicon,

If I understand you correctly, you are saying that if you point the PRTG to an IP address configured on your Frame Relay subinterface, you get no response from the router. If you point the PRTG to an IP address configured on a physical interface, the SNMP works correctly. Is this correct?

What I would suggest as the first step is to verify whether there is a basic IP connectivity between your PC that runs PRTG, and the Frame Relay subinterfaces. Try simply pinging all the IP addresses on your router, both those on physical interfaces and those on subinterfaces. You should have a successful reply. If you do not see a reply, try using the traceroute to ascertain if the packets are following the correct path.

In general, there should be absolutely no problems in using any IP addresses on your router for monitoring purposes.

Please do the tests as suggested and let us know the results.

Best regards,

Peter

[Natha340Mai340]

Thank you Peter.

If I understand you correctly, you are saying that if you point the PRTG  to an IP address configured on your Frame Relay subinterface, you get  no response from the router. If you point the PRTG to an IP address  configured on a physical interface, the SNMP works correctly. Is this  correct?

    A: yes, no work get snmp only for virtual interface frame-relay.

my main doubt is: is it possible do gets snmp in virtual interface frame-relay ?

thanks

[Peter Paluch · Accepted solution]

Hello Maicon,

If by "virtual interface frame-relay", you mean an subinterface of a serial interface configured for Frame Relay operation, then yes - any IP address on any router's interface can be used to contact the router.

What comes to my mind is whether all the subinterfaces and interfaces are in the up/up state. If an interface is not up/up, its IP address is not reachable despite being configured. Please use the show ip interface brief command to verify if all interfaces with IP address set are recognized as up/up. If they are something different, i.e. up/down, down/down, administratively down/down, then this problem must first be corrected, only then the IP address on that interface will become reachable.

Would it be possible to post your current configuration and the output of the show ip interface brief here? Also please perform the tests I asked you to do in my previous reply. Without all this additional information, it is very difficult to further find out the source of your problem.

Best regards,

Peter

[Natha340Mai340]

Thank you Peter,

I don't know where is my problem....because my all my interfaces are up/up as bellow.

let's go remember.... I'm monitoring the router from PRTG application. The PRTG can gets SNMP for all Interfaces except subinterfaces frame-relay.

in the PRTG device settings  there is a parameter about 32-bits and 64-bits traffic counters. I've already set the two paramenter but the error keep on yet.

the error shows by PRTG is: no such Name (SNMP error #2 )

Serial0/2/0 is up, line protocol is up

  Hardware is GT96K Serial

  Description: interface VETOR GVT

  MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,

     reliability 255/255, txload 40/255, rxload 1/255

  Encapsulation FRAME-RELAY IETF, loopback not set

  Keepalive set (10 sec)

  LMI enq sent  364676, LMI stat recvd 364676, LMI upd recvd 0, DTE LMI up

  LMI enq recvd 0, LMI stat sent  0, LMI upd sent  0

  LMI DLCI 0  LMI type is ANSI Annex D  frame relay DTE

  FR SVC disabled, LAPF state down

  Broadcast queue 0/64, broadcasts sent/dropped 60796/0, interface broadcasts 17

  Last input 00:00:01, output 00:00:00, output hang never

  Last clearing of "show interface" counters 6w0d

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 13218

  Queueing strategy: weighted fair

  Output queue: 0/1000/64/13218 (size/max total/threshold/drops)

     Conversations  0/164/256 (active/max active/max total)

     Reserved Conversations 0/0 (allocated/max allocated)

     Available Bandwidth 1536 kilobits/sec

  5 minute input rate 2000 bits/sec, 3 packets/sec

  5 minute output rate 325000 bits/sec, 185 packets/sec

     2818303 packets input, 335085753 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     36 input errors, 36 CRC, 16 frame, 6 overrun, 0 ignored, 26 abort

     205962515 packets output, 572994472 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up

Subinterface:

Serial0/2/0.100 is up, line protocol is up

  Hardware is GT96K Serial

  Internet address is 172.30.10.2/30

  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,

     reliability 255/255, txload 40/255, rxload 1/255

  Encapsulation FRAME-RELAY IETF

  Last clearing of "show interface" counters never

Serial0/3/0 is up, line protocol is up

  Hardware is GT96K Serial

  Description: VETOR Oi

  Internet address is 10.0.3.18/30

  MTU 1500 bytes, BW 2048 Kbit, DLY 20000 usec,

     reliability 255/255, txload 9/255, rxload 90/255

  Encapsulation PPP, LCP Open

  Listen: CDPCP

  Open: IPCP, loopback not set

  Keepalive set (10 sec)

  Last input 00:00:00, output 00:00:00, output hang never

  Last clearing of "show interface" counters 6w0d

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 36077

  Queueing strategy: weighted fair

  Output queue: 0/1000/64/36077 (size/max total/threshold/drops)

     Conversations  0/173/256 (active/max active/max total)

     Reserved Conversations 0/0 (allocated/max allocated)

     Available Bandwidth 1536 kilobits/sec

  5 minute input rate 726000 bits/sec, 235 packets/sec

  5 minute output rate 75000 bits/sec, 38 packets/sec

     314416449 packets input, 2530139239 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     103279907 packets output, 2077219771 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up

Thanks

[Peter Paluch]

Hello Maicon,

What does this command say when you issue it on your router?

show snmp mib ifindex detail serial0/2/0.100

Best regards,

Peter

[Natha340Mai340]

Sorry, for my delay. follow...

PAC0101#show snmp mib ifmib ifindex serial 0/2/0.100

Interface = Serial0/2/0.100, Ifindex = 12

thanks